The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-00-134-4501, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Grove Valve Operations. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-134-4501 |
| Primary Part Number | 090-05302 |
| Item Name | Diaphragm,actuator Valve,special |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Grove Valve Operations |
| Status | ACTIVE |
| Outside Diameter | 5.374 INCHES NOMINAL IN |
| Material Thickness | 0.132 INCHES NOMINAL IN |
| Material | RUBBER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 090-05302 PRIMARY | Grove Valve Operations (USA) |
| N-903 PC15 | Grove Valve Operations (USA) |
| Reference | Meaning |
|---|---|
| N-913 | D/9 Drawing number reference only Grove Valve Operations |
NSN 4820-00-134-4501 is a Diaphragm,actuator Valve,special, manufactured by Grove Valve Operations, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-134-4501 has 2 manufacturer part numbers on file: 090-05302 (Grove Valve Operations), N-903 PC15 (Grove Valve Operations).
1 possible match (shared part number, not a government interchangeability claim): 5945-01-371-5553. Verify interchangeability with system specifications before substitution.
Key specifications for 090-05302: Overall Height: 0.864 INCHES NOMINAL IN; Outside Diameter: 5.374 INCHES NOMINAL IN; Material Thickness: 0.132 INCHES NOMINAL IN; Material: RUBBER. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.